public double ZMin {get;}

var (lasFileCount, zLasFileCount) = lasDataset.GetFileCounts();
IReadOnlyList<ArcGIS.Core.Data.Analyst3D.LasFile> fileInfo = lasDataset.GetFiles();
foreach (var file in fileInfo)
{
  var path = file.FilePath;
  var name = file.FileName;
  var ptCount = file.PointCount;
  var zMin = file.ZMin;
  var zMax = file.ZMax;
}